AT25640A-10TU-2.7 データシートの表示（PDF） - Atmel Corporation

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AT25640A-10TU-2.7

SPI Serial EEPROMs 8K (1024 x 8),16K (2048 x 8),32K (4096 x 8),64K (8192 x 8)

Atmel Corporation 

Features

• Serial Peripheral Interface (SPI) Compatible

• Supports SPI Modes 0 (0,0) and 3 (1,1)

– Datasheet Describes Mode 0 Operation

• Low-voltage and Standard-voltage Operation

– 2.7 (VCC = 2.7V to 5.5V)

– 1.8 (VCC = 1.8V to 5.5V)

• 20 MHz Clock Rate (5V)

• 32-byte Page Mode

• Block Write Protection

– Protect 1/4, 1/2, or Entire Array

• Write Protect (WP) Pin and Write Disable Instructions for Both Hardware and Software

Data Protection

• Self-timed Write Cycle (5 ms max)

• High Reliability

– Endurance: One Million Write Cycles

– Data Retention: 100 Years

• Automotive Devices Available

• 8-lead JEDEC PDIP, 8-lead JEDEC SOIC, 8-lead Ultra Thin Mini-MAP (MLP 2x3), and 8-

lead TSSOP Packages

• Die Sales: Wafer Form, Waffle Pack, and Bumped Wafers

Description

The AT25080A/160A/320A/640A provides 8192/16384/32768/65536 bits of serial

electrically-erasable programmable read-only memory (EEPROM) organized as

1024/2048/4096/8192 words of 8 bits each. The device is optimized for use in many

industrial and commercial applications where low-power and low-voltage operation

are essential. The AT25080A/160A/320A/640A is available in space-saving 8-lead

PDIP, 8-lead JEDEC SOIC, 8-lead MAP, 8-lead Ultra Thin Mini-MAP (MLP 2x3) and 8-

lead TSSOP packages.

The AT25080A/160A/320A/640A is enabled through the Chip Select pin (CS) and

accessed via a three-wire interface consisting of Serial Data Input (SI), Serial Data

Output (SO), and Serial Clock (SCK). All programming cycles are completely self-

timed, and no separate erase cycle is required before write.

Table 1. Pin Configuration

8-lead PDIP

8-lead SOIC

Pin Name

CS

SCK

Function

Chip Select

Serial Data Clock

CS 1

SO 2

WP 3

GND 4

8 VCC

CS 1

7 HOLD SO 2

6 SCK

WP 3

5 SI

GND 4

8 VCC

7 HOLD

6 SCK

5 SI

SI

SO

GND

VCC

WP

HOLD

NC

DC

Serial Data Input

Serial Data Output

Ground

Power Supply

Write Protect

Suspends Serial Input

No Connect

Don’t Connect

8-lead TSSOP

8-lead Ultra Thin Mini-MAP (MLP 2x3)

CS 1

SO 2

WP 3

GND 4

8 VCC

7 HOLD

6 SCK

5 SI

VCC 8

HOLD 7

SCK 6

SI 5

1 CS

2 SO

3 WP

4 GND

Bottom View

8-lead MAP

VCC 8

HOLD 7

SCK 6

SI 5

1 CS

2 SO

3 WP

4 GND

Bottom View

SPI Serial

EEPROMs

8K (1024 x 8)

16K (2048 x 8)

32K (4096 x 8)

64K (8192 x 8)

AT25080A

AT25160A

AT25320A

AT25640A

3347K–SEEPR–2/07

1

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